import {z} from 'zod'

export type GetApiV3EnterpriseMetricsPrsArgs = {user_ids?: (Array<string> | null) | undefined, service_user_ids?: (Array<string> | null) | undefined, time_before: number, time_after: number, org_ids?: (Array<string> | null) | undefined, playbook_id?: (string | null) | undefined};

export type GetApiV3EnterpriseMetricsPrsOptions = {baseUrl: string, bearerAuth?: string | undefined, fetch?: typeof fetch | undefined};

export const prMetricsResponse = z.object({prs_closed_count: z.number().int(), prs_created_count: z.number().int(), prs_merged_count: z.number().int(), prs_opened_count: z.number().int(), prs_taken_over_closed_count: z.number().int().optional(), prs_taken_over_count: z.number().int().optional(), prs_taken_over_merged_count: z.number().int().optional(), prs_taken_over_opened_count: z.number().int().optional()});

export const validateResponse = async <Output>(
  schema: {
    readonly '~standard': {
      readonly validate: (value: unknown) => ({ readonly value: Output; readonly issues?: undefined } | { readonly issues: ReadonlyArray<{ readonly message: string; readonly path?: ReadonlyArray<PropertyKey | { readonly key: PropertyKey }> | undefined }> }) | Promise<{ readonly value: Output; readonly issues?: undefined } | { readonly issues: ReadonlyArray<{ readonly message: string; readonly path?: ReadonlyArray<PropertyKey | { readonly key: PropertyKey }> | undefined }> }>
    }
  },
  value: unknown
): Promise<Output> => {
  const result = await schema['~standard'].validate(value)

  if (result.issues !== undefined) {
    const detail = result.issues
      .map(({ message, path }) =>
        path?.length
          ? `${path.map((segment) => String(typeof segment === 'object' ? segment.key : segment)).join('.')}: ${message}`
          : message
      )
      .join('; ')

    throw new Error(`Response does not match the schema: ${detail}`, { cause: { issues: result.issues } })
  }

  return result.value
};

/**
 * Get PR Metrics
 * 
 * GET /v3/enterprise/metrics/prs
 */
export const getApiV3EnterpriseMetricsPrs = async (args: GetApiV3EnterpriseMetricsPrsArgs, options: GetApiV3EnterpriseMetricsPrsOptions) => {
const {baseUrl, fetch: fetchFn = fetch, bearerAuth} = options ?? {}

const query = new URLSearchParams()
const headers = new Headers()
headers.set('accept', "application/json")

for (const item of args.user_ids ?? []) query.append("user_ids", String(item))
for (const item of args.service_user_ids ?? []) query.append("service_user_ids", String(item))
if (args.time_before != null) query.append("time_before", String(args.time_before))
if (args.time_after != null) query.append("time_after", String(args.time_after))
for (const item of args.org_ids ?? []) query.append("org_ids", String(item))
if (args.playbook_id != null) query.append("playbook_id", String(args.playbook_id))
if (bearerAuth !== undefined) headers.set('authorization', `Bearer ${bearerAuth}`)

const url = `${baseUrl.replace(/\/+$/, '')}/v3/enterprise/metrics/prs${query.size > 0 ? `?${query}` : ''}`

const res = await fetchFn(url, {method: "GET", headers})

if (!res.ok) throw new Error(`Request failed with status ${res.status}`, {cause: {status: res.status, body: await res.text()}})

return validateResponse(prMetricsResponse, await res.json())
};